## 16. If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

## 17. If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension)

## 18. Turn buckle has

## 19. The angle of twist of shaft is

## 20. Guest's theory of failure is applicable for following type of materials

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